Millions of US children remain unvaccinated as BA.5 spreads and new school year looms

Millions of school-age children in the United States are still unvaccinated against Covid-19 as many prepare for a return to school. A new CNN analysis finds that less than half of children and teens are fully vaccinated against Covid-19, and only a tenth have been boosted. Many of the nation's largest school systems -- including Los Angeles Unified, City of Chicago, Miami-Dade County and Clark County in Nevada -- start school next month.